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Respected Contributor
Posts: 3,725
Registered: ‎03-09-2010

OP here.  I have been reading this morning, and the Pubmed article I read said that more studies need to be done and that there are not enough studies to prove that D-Mannose helps or doesn't help. So all a person can go on is anecdotal evidence.  In most cases, they stated that there are no side effects from taking D-Mannose but did list some that I've read here mainly stomach issues.  They also cautioned that diabetics and people with kidney issues consult their doctors before taking it.  But for the average person, it is okay to try.

I rejoined Consumer Lab to read what they had to say.  For those who don't know, CL tests many brands of supplements for efficacy and purity and puts the pencil to paper to which is the best buy for what you get.  It costs to join, but at least I know that what I choose is pure and has in it what it says it has in it.

Here are their top recommendations for a pill and for a powder--in other words, the most bang for your buck with pure ingredients.  As an aside, NOW D-Mannose was approved @I am still oxox .

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Honored Contributor
Posts: 21,706
Registered: ‎03-09-2010

The bottle should have dosing requirements. Mine says two tablets with a full glass of water each morning.

Trusted Contributor
Posts: 1,034
Registered: ‎08-30-2010

There are other natural items that you can take to help prevent and also to wards off--Grapefruit seed extract and Olive Leaf Extract are just two that come to mind.